Lowest Price of 1.2311/P20/3Cr2Mo Plastic Mould Steel Plate
Grade: 1.2311 /P20/3Cr2Mo
Standard: AISI, ASTM, BS, DIN, GB, JIS
1. Product Desciption
a. 1.2311/P20 Mould Steel is a versatile, low-alloy tool steel that is characterized by good toughness at moderate strength levels.
b. 1.2311 Mould steel is commonly used for plastic injection mold cavities and tooling and for die casting dies for zinc.
c. P20 is typically sold in the pre-hardened condition at hardness of approximately 300 HBW.
Characteristics as following:
1, Good hardenability
2, Good integral machanical performance under high temperature
3, Good heat-resistance and fatigue-resistance
4, Good performance against liquid metal erosion
5, High putity and homogeneous structure of China's biggest ESR production base for its strict requirement in the whole process of exploitation,smelting,vacuum degassing,ESR,forging,annealing,inspection
2. Available size :
| Round |
Diameter |
Length |
| 10mm-350mm |
3000mm-6000mm |
| Steel plate |
Thickness |
Width |
Length |
| 12-460mm |
>=155mm |
5800mm |
3. Chemical analysis
Chemical composition(for reference only):
| C |
Si |
Cr |
Mn |
Mo |
P |
S |
| 0.28-0.40 |
0.20-0.80 |
1.40-2.00 |
0.60-1.00 |
0.30-0.55 |
≤0.03 |
≤0.03 |
4. Compared grades(based on usage)
| Chinese |
American |
German |
Swedish |
Japanese |
| GB |
AISI |
DIN |
ASSAB |
JIS |
| 3Cr2Mo |
P20 |
1.2311 |
618 |
PDS-3 |
5. Delivery Condition:
1. Hot rolled, black,
2. Hardness: HRC=28--33,
3. Annealed Hardness: HBS<=235.
6. Application
Good mechanincal property, make surface have equal hardness after deal with it, Nice polishing , for some mini. roughness on the surface which can be dealed with induration in advance. It can be used directly after the mould machined, deal with surface induration necessity.
1.2311 is a pre-hardened high tensile tool steel which offers ready machineability in the hardened and tempered condition, therefore does not always require further heat treatment . This eliminates the risks, cost, and waiting time of heat treatment and avoids the associated possibility of distortion or even cracking. Subsequent 1.2311 component modifications can easily be carried out.
7. Physical Properties
Density: 0.284 lb/in3 (7861 kg/m3)
Specific Gravity: 7.86
Modulus of Elasticity: 30 x 106 psi (207 GPa)
Thermal Conductivity:
24 Btu/ft/hr/°F
41.5 W/m/°K
Machinability: 60-65% of a 1% carbon steel
Heat Treating Instruction
Hardening
Critical Temperature:
Ac1: 1405ºF (763ºC)
Preheating: Heat at a rate not exceeding 400ºF per hour (222ºC per hour) to 1150-1250ºF (621-677ºC) and equalize.
Austenitizing (High Heat): Heat rapidly from the preheat to 1550ºF (843°C).
Soak for 30 minutes for first inch (25.4mm) of thickness, plus 15 minutes for each additional inch (25.4mm).
Quenching: Pressurized gas, or interrupted oil to 150-125ºF (66-51ºC).
For oil, quench until black, at about 900°F (482°C), then cool in still air to 150-125°F (66-51°C).
Tempering: Temper immediately after quenching or cryogenic treatment.
Hold at the temperature for 1 hour per inch (25.4mm) of thickness, 2 hours minimum,
then air cool to ambient temperature.
Tempering temperatures and hardness are given in chart above.
Annealing
Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1450°F (788°C),
and hold at temperature for 1 hour per inch (25.4mm) of maximum thickness; 2 hours minimum.
Then cool slowly with the furnace at a rate not exceeding 50ºF per hour (28ºC per hour) to 1150ºF (621ºC).
Continue cooling to ambient temperature in the furnace or in air.
8. Delivery:
Abundant stock, 7-15 days.
Customized products, 30-50 days.
9. Packaging: standard export packing or As per request
Quality Inspection
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About us:
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China. With more than 20 years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.
To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel.
We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients.
Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services.
All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.
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